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Updated: Jan 27, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
Published on: February 3, 2023
Electropalatographic and spectrographic descriptions of allophonic variants of /1/
1Department of Communication Disorders, Central Michigan University, Mount Pleasant 48859, USA.
Abstract:
Prevocalic and postvocalic /1/ were investigated in three adult subjects utilizing a combination of electropalatographic and acoustic techniques. Results indicated that prevocalic /1/ was characterized by both alveolar and lateral lingua-palatal contact, while postvocalic /1/ was primarily alveolar contact only. Acoustically, prevocalic /1/ had a lower first formant and higher second formant than postvocalic /1/. In addition, the second and third formants were often weak or absent for prevocalic but not postvocalic /1/. Vowel context had a greater effect on the electropalatographic and acoustic characteristics of prevocalic than postvocalic /1/. Models that relate physiological and acoustical aspects of speech were utilized to account for the observed results.
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